<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>输入框</title>
		<meta name="viewport" content="width=device-width,user-scalable=no,initial-scale=1.0,maximum=1.0,minimum-scale=1.0"/>
		<link href="css/bootstrap.css" rel="stylesheet" />
	</head>
	<body>
		<div class="input-group  input-gropu-lg">
			<span class="input-group-addon">@</span>
			<input type="text" class="form-control" placeholder="Username">
		</div>
		<div class="input-group  input-gropu-sm">
			<input type="text" class="form-control" placeholder="请输入要搜索的内容" />
			<span class="input-group-addon">百度一下</span>
		</div>
	</body>
</html>
